Ok dude, sounds like you've got your hands full, but have faith in yourself and confidence and it'll be cool I'm sure.
I'm probably not the most qualified person on here to advise you what to do, but I'll do what I can... Start by answering these questions.
Firstly how long has the show got to be? This is an important factor, as there's no point cramming 10 tricks into 10 minutes, just like making 3 tricks last an hour and thirty minutes would be difficult for most people.
Secondly, who are you looking at entertaining? Kids, adults, teenagers, grannies? The different age groups could make alot of difference in which tricks you present.
Thirdly Which of these tricks are you most proficient in and which ones excite you the most? Myself I find that the tricks I like the best in my routines are the ones that tend to come across best to the audience. For example, I can perform a bill switch to any age group because it suits my style and I like the effect but I would struggle to do the same thing with sponge balls just because it doesn't.
Finally how would you like your audience to see you? For example would you like them to think of you as a zany comedian, a cool street magician or something completely different. Maybe you would have difficulty pulling these approaches off and would rather just stick to being yourself.
Have a think about these questions and then think again about your effects.
One bit of advice I was given was to try and pace your routine a bit like a movie, start with an attention grabber and end on something that knocks their socks off.
Probably the most important bit of advice I could give is however this. Don't rush in an attempt to cram too much in, each effect has it's own charms and the audience often need time to digest the last effect before the next one starts, so don't let nerves make you zip through everything.
Hope it helps.
