Codeine/Chlorpheniramine/Pseudoephedrine syrup(phenylhistine)

Alright so I found an old bottle of this Phenylhistine syrup in my medicine cabinet from 2006 when I was desperate for an opiate the other night. I tried a small dose because I've been worried about the pseudoephedrine. I'm not very much a fan of decent stimulants in general, but pseudoephedrine is notorious for a nasty buzz. I tried one ounce of the syrup which was a 60mg dose of codeine, 180mg of pseudo, and 12mg of the chlor. I did this dose pretty early in the morning as I hadn't slept yet and it was nearly 4 o'clock. The initial high was actually pretty good, much to my surprise(at the amount of effect I had). I mean its been a fair while since I've done an opiate but I used to take 200 mg of codeine to get a serious high, and at least 100-120 mg to get a decent effect. I never really had a tolerance to codeine, the first time I did it for a high was when I have some cough syrup prescribed and took 60mg. I remember feeling an effect but it was nothing strong or even really pronounced, it was just kind of drifty. I did higher doses after that slowly moving up in dose each time. I had effects of what I remember like a 100mg dose or mabye a little more. I't was definitely a significant effect, as I was kind of just laying down after that drifting off in my head, I also kept getting weird like dreamlike visions as I had my eyes closed, and although I was wide awake it was almost like inside my head I was already dreaming. Enough pot was smoked to give me a good stone if I weren't already high, and no doubt the extra depressant/deliriant/antihistamine was contributed for potentiation of the codeine. I had fallen asleep at some time, when I woke I felt so... So shitty. It was the pseudoephedrine, with its pretty long half life it was still going strong and continued to be going strong for a while, half of the day I'd say. 180mg isn't that large of a dose, but it was certainly enough for stimulating and weird sensations. It was like I drank way too much coffee.. Well honestly it probably wasn't as bad as that would be but none the less, I felt very nauseous for a while when I was getting up and starting my day. I couldn't eat anything, but I had a strong feeling that that would kind of settle the uncomfort, and once I did it did help alot. I felt oddly very comfortable when I was laying down but I couldn't fall back asleep so I got up. I mostly had like a feeling of pressure in my head and a sort of almost light trippy feeling in my stomach.
let me bring up my main purpose for stating all this, I plan to try it again soon, but want to avoid the negative after effects. I am thinking that afterwards I could mabye just take a benzo to kind of counteract the stimulant, but for all I know it could just make me feel worse or at least stranger. Does anyone have any experience in combining benzos with stimulants or using a benzo to counteract a stimulant? Would you recommend me to do this? Obviously I'm going to do the syrup either way. I just don't like stimulants, let alone one that feels like I'm gonna die.