Hey guys, I'm kind of new here so excuse me if I'm not that well versed in the matters of this forum,

I need a little help with fixing up my workouts. I've been reading some posts
Around here and I've noticed I do a lot of what you guys have called wrong.

Here's my schedule:
-Mon: pushups (I do around 150 to 200, depending on the day, I also
Alternate between regulars, military and wide)

-Tues: Ab workout (around 30 minutes)

-Wed: Arms (I do mostly isolation excercises, 3x8 alternating between biceps,
Triceps and shoulders)

-Thurs: Abs again

-Fri: leg workouts. And sometimes I take this day to work my arms some more
Or do pushups.

-Sat: Running (2 miles at the track)

-sun: rest or abs

While I kinda like this workout, and I HAVE seen a lot of development, I'm thinking that I should change this up a bit
I'm thinking of adding squats, bench and deads when I buy a bar, (I'm piss broke right now)

What do you guys think I should change? How should I style a new routine in order to see max. gains?
Thanks a lot in advance.