I done exactly the same thing about 6 or 7 years ago and ran for about a year. I hires labspace at the local uni and put in some grant apps for business from the local government. I found, being so young and handsome and all, that people didn't really take me seriously and it was difficult to get them to part with their money for speculative research ideas. Investors want to fund finished products. I gave up after a year as my rental, insurance and other overheads were larger than the income. Perhaps I just not good enough as a sales person.
If you go for this can I make a suggestion that you probably wont like. If you don't have an existing idea which you have already proven and looks like it is going to make you money - i.e. if all of your ideas are still in the speculation stage and you have no working prototypes or any funding yet, then do something on the side as well. For example get a product you can sell business to business on a commission paid basis, or get a part time job until your business runs itself.
I work for someone else now and if I was ever to do this again I would have to have a product, some sort of cash cow to sell B2B to tide me over (because I'm not rich enough to just go it alone).
Good luck,
Regards,
P.