Flipping is a really tough business. I've been in the Philly market since 2016 and I do not flip. I think good flippers talk about something like 80-20 -- they do well on 80% of their projects. Pointing it out because experienced folks have fails. In a city like Philly, you will face many challenges - you need to learn the market and know the neighborhood and the block and make sure all of your numbers are within reason, you need very reliable contractors, you need a to understand the permit process, you need to be familiar with market expectations. I am guessing you like the numbers you see in Strawberry Mansion and Norristown (Montco not Philly) but do you know for a fact that at those numbers, you can do a full gut rehab and be at a number that will allow you to profit, and along the way make some sizable mistakes especially if this is your first project . . . there are ways to get guidance, especially if you are local. Work with someone who can guide you or just accept that your tuition will be paid through making some costly mistakes which is also legit if you can afford that :-) Good luck!