Mushrooms are a pretty powerful experience and with nothing else to go by I wouldn't underestimate it. Potentiation with syrian rue or other MAOIs is a big no-no for a first time!
Smoking weed can be okay, a necessity for some but making it too muddled for others. If you decide to do that, at least wait until after the peak, until it's really clear that you have reached the final intensity. You wouldn't be the first one to be overwhelmed by the cannabis, trust me. Smoke more slowly than normally, take a few mild hits and take a few minutes to see what happens before you puff like you normally do. A few more hits might not make a world of difference normally but with mushrooms in ways its like your first time again (in a certain odd sense though).
Redosing is not really a worthwhile thing in the opinion of many (including me). Generally you have to first wait until after the peak, but by then it's too late and you will mostly extend the trip and not deepen it. If you do it earlier it can be too much.
I want to emphasize though that while I really understand that you want it to be memorable, overwhelming mushroom trips can really shake you deep in your core. In my personal experience it can be serious and mildly traumatizing so be careful.
If you want to raise the stakes, don't consider potentiation because it will make it more difficult to get a result that is not too little and not too much, like a multivariable equation it is more complex. Instead, make the dose a little higher than 2g, make it 2,5 or 2,75g.
The lemon tek can be very powerful but pretty hard to estimate the result, I recommend against it for a first time but if you have done it a few times I do recommend it for sure. My second trip was with citrus juices which was equivalent to a lemon tek, I had full on ego death for hours and had an unexpected mystical experience. It was MUCH MUCH too powerful.
I advise you to relax a bit about your expectations, expecting too much isn't a good thing. You cannot force it to be magical, magic happens if you just let happen what will happen, whatever it is. Mushrooms are extraordinary enough by themselves. If your mushrooms are of average potency it should be special enough. If not, just take a little more the next time. That way at least in the first 2 or 3 times you will get what you asked for and more. I assure you.