With that being said any suggestions on what order I should make my purchases?!?!
I will agree with much of what has been said, disagree with some.
1. Exposure suit, THAT FITS YOU. This is a biggee, and not necessarily that expensive;
2. Regulator - yes, this is not a fit issue, and I could easily argue for the BCD next, because that is a fit issue. I just feel a bit more comfortable with a rental BCD than I do with a rental regulator. I like to put my own perferred mouthpieces on the scond stage, I want to know how it breathes etc. Plus, you have to have a regulator to dive;
2. BCD - this is a fit issue, but I could easily argue for the regulator next, because that is a comfort issue. But, it is really nice to have a BCD that fits you - it lowers your frustration in the water. I like to set my BCD (BP/W) up so the D-rings are where I want them, the bungee loops are where I want them, I know where everything is and can find what I want with my eyes closed - just by feel; plus, you really have to have a BCD to dive these days, Mike Nelson's habits notwithstanding;
7. Computer (this is where I will disagree). Do you have to have a computer to dive? No. Is a computer something that you have to 'fit' to you? No. I dove for two years atter OW certification without one. I still at times forget to strap mine on for recreational dives. What you really need is a SPG. A bottom timer of some sort is nice, as is a depth gauge. But, I literally do dozens of dives where I have a SPG and hardly ever look at my depth gauge, and essentially use my buddy's bottom timer - we have actually taken time before the dive to figure out our NDL by looking at our tables, and know that our gas supply is the limiting factor, not NDL. I am not bashing computers - I have 3 of them. But, if I look at what is essential to dive, a computer is not, any more than a GPS is essential to drive a car. If you want to get wet, you need what you already have, you need a regulator and a BCD (and I really can't choose one before the other as you might note from my numerical ranking), you should have a proper exposure suit, you need a gas supply (which is an easily 'rentable' piece of gear), and a SPG.
Kian:
I am willing wait to spend a little more on a better product then try to skimp or take chances on Ebay or Craigslist.
That is your choice. I agree with part of your thinking - don't buy 'cheap' gear (I don't mean inexpensive, I mean poor quality.) But, buying used on eBay or Craigslist may be quite reasonable. I have bought multiple (>10) regs on eBay, without a problem, other than one second stage case that was cracked (and easily replaced). I have bought multple backplates and wings on eBay without a problem (other than one harness for which the size was incorrectly listed, and for which the seller refunded my money, plus shipping). I have bought used cylinders on eBay and on a cave diver fourm - at a good price, for which I received good value. I am not saying you have to buy used. Rather, don't discount the possibility. The key, though, is knowing enough to make a good purchase.