B.Mans,
If I were to do the combo of MDMA and 2ci, I would definitely start with the 2ci, as should seem obvious since it lasts longer. I would dose 15mg, which, for me, can be quite strong. 3-4 hours later I would dose 120mg of MDMA, maybe even lower (~100mg).
Sometimes it is better to dose them in such a way that the come-up will be longer and more intense... I think I prefer to go up, come a little ways down, and then go up again, then come down. With the 2ci and the MDMA combo, the 2ci should kick in within an hour or so and develop for another hour or so. Then I'd be in the 2cI trip, most likely enjoying the buzz. 15mg (in my last attempt at least) has given me decent acid-like visuals. So I'll probably enjoy that for a while. My mind will probably catch up to the trip, and I'll feel at peace with it. 3 hours in I should have a nice control on things. At that point I can enjoy the trip for a while longer, then eat some MDMA and hour later (t+4). Then the mdma should kick in fully about an hour later. At which point I will probably dance the night away, and maybe get paranoid. For that reason I would take a smaller-ish dose of MDMA. I would prefer if MDMA didn't kick my ass in a trip. I prefer that it just add a euphoric push, and a pleasant, peaceful state.
So that is what I would do if I were to do this combo again. You may or may not want to do that for the same or different reasons. I'm just not a huge fan of MDMA. I only like to eat it one I am at my house and I can just get intoxicated on it, lay around and feel good for a few hours. Feel like everything in my life is awesome. Feel comfy in my home and whatever else. With 2cI and most other 2cs going out is really nice, and I don't mind using them at home. They are pretty versatile, I feel. Same with acid. I prefer acid at festivals and all night parties/raves. So for my, most likely I won't ever use this combo again. honestly I think I would like to combine 2cI with mushrooms... but I'm not really sure how I'd go about it and whether I would even want to.
Anyways a word about past 2cI MDMA explorations.
I ate something like 20 or 25 mg of 2cI... It was my first time and I was at a festival. I tripped good and hard. It was awesome. I ate 1 roll about 4 hours later. I had a great night. I got very dehydrated when the roll started to kick in though... which led to some paranoia. Make sure you got plenty of water before and after you eat the MDMA.
I have one other time, where I ate 18mg of 2cI at an all night party/rave. An hour after eating the acid, I ate 2 hits of acid. I tripped hard and danced hard for a long while. 5, or 6 hours into the rave I ended up getting some "molly" and eating it up. It was an undetermined amount. Probably 60-100mg I would say. I don't quite remember though, since this was also a few years ago. We left the rave, and I was feeling great. I was the driver though, and we had a good 2 hour drive ahead of us. It was alright though, cause it was 6am and that beautiful sun was rising in the bright blue clear skies. I felt grand driving along the road while my some of my friends crashed in the back seat.
I also have eaten MDMA with 2ce. This made me feel very opiated. very calm and peaceful. I did it the same way, eating the MDMA 4 hours later. I think the doses were 18mg and 120mg. I was at a major festival, and missed a few of the bands that I wanted to see. I just didn't care. I felt at peace just being at the festival. I didn't need to do anything important. It didn't matter if I saw anyone. I felt bliss just picking out blades of grass from the ground and talking with anyone who would come sit by me.
I feel like MDMA gives me that opiated feeling... The feeling where I just wanna lay down and relax and let all my worries dissolve. It makes me less active in combination with psychedelics. I'm not a fan of candyflipping. I'd rather mix 2cb and acid.... and moreso at this point I would rather just do a stronger dose of one particular chem than mix things. The MDMA makes me not give a shit about how cool anything is because everything is cool anyways. It takes away the passions and excitements of choice, and replaces with a loved-up feeling for nothingness.
Okay, I'm done. Whatever you end up doing, Enjoy! Let us know how it goes.