if i am going to an event like a party or a festival where i know i can trip i never plan to do it ahead of time. that is something i always make sure of when i am going to any kind of psychedelic oriented event. you never know how weird or awesome the vibes will be until you get there. i know tons of people that talk about how they are going to be tripping for night X of event Y, but i cant bring myself to do that. i have way more success getting there and feeling it out. the best part is, if you end up tripping and have a good time you can get more supplies for later!
I think a certain amount of planning ahead is a must. If I'm going to a fest or whatever then I will indeed plan out ahead in very general terms what I'll use on what night, simply because if I spend time to rationally plan it out then I can maximize the responsibility of use, ie scheduling things so as to generate the least tolerance and to properly allow time between trips on chemicals in the same chemical family. But then at the same time, it is critical that one does as you say and feels out the scene. If you have a plan or schedule that you decide to rigorously follow irrespective of the vibe when you get there, not only might you have a bad time but also you're not being responsible so much, and obviously the focus is on doing the drugs and not being at a feat for music and people, which is backwards.
To the OP: I would say that if it feels right for you, do it. There are many in this forum that would say any more frequent use than once every month, or even every few months, is overuse/abuse. And that may be the case for their biochemistry and mind. If that works for them, wonderful, but my biochemistry and mind do not need that much downtime. While it is not a responsible thing, definitely not a good thing either, there have been periods in my life where I've tripped every other day for almost a month with no ill effects.
Obviously that's WAY overdoing it, and I certainly don't do that anymore. But my point is everybody has a different amount of time that is their ideal break period between trips. For me it is probably three or four days. Meaning not that I trip every three to four days without fail, but rather that that is the minimum amount of time between trips that I think is right for me. So I may go a month or three without tripping, and then trip twice a week for two weeks, and then take another break.
So what I'm getting at is that it's all going to be based on you, everybody is different. If you feel comfortable using the acid this soon after your last trip, there is absolutely nothing wrong with that. But be attuned to your body and mind so that if you do begin to use it too frequently for your constitution you can tell and alter your behavior accordingly. If you wake up on the day of the potential trip and spend a short period of time examining your thoughts and feelings on the matter, I expect that you'll come to one conclusion or another easily, as that answer of 'to use or not' will just feel intuitively right. And thus whatever that decision is, if you base it on what your body and mind are telling you, the decision will be the correct choice.
EDIT: And I should add that we cannot – and moreover should not – make this type of decision for you. It is not only going to be answerable only by examining your own biochemistry, spirit, body, and mind, but is furthermore an intensely personal thing to consider and figure out on your own. That's not to say that asking for advice is incorrect, just the opposite in fact, as it may present other people's ideas and information about how they personally react to psychedelics as far as frequency of use. But ultimately the decision must be yours.
Good luck, and have fun!