in a certain way i can relate to what you're saying. i so badly want a second puppy right now, but i think it happens when its supposed to. right now i am busy with my new company and still living at home. so i am going to wait till december to get her, my life will be more stable and i will be moving out into my own place. just me Ziigy and the new Zoe (yes, i've even named her and found a great breeder). When I got ziggy it was an impulse buy and I ended up spending 5000bucks in vet bills in the first 3 days of his life. I wouldnt like anyone to go through what i did.
But whatever decision you make though i really hope it works out for you and this puppy.
Good luck doll