Believe me you won't have *any* spare. Your best bet is to get absolutely hammered at the student bar and shag your fellow students instead, for free. If you really think you're going to have some spare then bung it in a savings account for when you would otherwise have thought "damn, I really wish I hadn't blown £350 on that crap shag".
In all honesty I've not seen either girl, but a threesome with AVN1 and Starnatalia would probably be the way to go and then knock it on the head. On average I prefer them about 3 dress sizes bigger, not always, but usually.
I agree with the above lines quoted. If I was in my late teens\early 20s and if Iknew what I knew now I wouldn't waste my time with the long, loveless relationship I got into which led me to punt around the age of 25, I wouldn't chase after women who had no interest in me in the hope of convincing them to fuck me, I wouldn't have got so arseholed even if my "sparkling conversation" could have persuaded a girl to go back with me I wouldn't have been able to get it up anyway, last but not least I would have dated girls who liked me, but I rejected because I thought I was a league above them and my mates might take the piss - in reality they would have cheered me on.
Mostly I would know that I would rather shag an 18-25 year old student than a 40 something escort. No disrespect to the girls in question, but when women get to about 30 their hair goes thin and wiry, the skin isn't baby-soft anymore and the naivety (you know almost a dizzy routine) which is so charming at that age becomes perpetually irritating if they are still doing it. The other factor is at that age you are more open to deviating from type. We all know punting gets you opportunities you wouldn't normally have, in my case shagging an Indian woman for example; but when I was in my late teens I dated a skater type girls with lip rings and dyed hair who wore hoodies doubt I would now or the "country bumpkin" who was a decent shag, but boring as fuck to talk to doubt I could date someone who wasn't intellectually stimulating now even I could get my end away almost everytime I saw her. Looking back, I mainly saw a lot of wasted opportunities the girls who smiled at me in the right way and went out of their way to talk to me. I just thought they were being friendly when they probably wanted a good ride. Then there's not exploring, turning down anal sex from a middle class student brat when it was offered to me by a girl on her period at 18. I've made up for that, but I didn't know myself at all.
Like Stevedave I wasn't a weed head as such, but I wish I hadn't drunk so much. What did I drink? Shit double vodka and coke at £5 a go, pints of Fosters, Snakebite and Black I mean FFS it was before the craft beer revolution, but what I did was neglect my health for what were mainly shit nights out. I hit the gym a bit in my teens, but I wish I continued in my 20s, fuck knows why I stopped, the gym was also incredibly cheap with a union card. I've had to make up for it in my 30s which has meant training twice as hard, I don't need to lose weight anymore, but it seems to take ages to see definition.
Succinctly don't waste your time now because in 10 years time it will be like pushing a length of rope through the channel tunnel.