Most Chief Pilots that I know do not look favourably upon a SSTR. They would be even more suspicious about paid Line Training as hour building. Shelling out this kind of money will not get you a proper job - you will always be bumping along the bottom with the cr@p employers - at best.
If you can't get some form of sponsorship (and there is quite a lot of it going at the moment), far better, IMHO, to come through the ranks of GA and/or turboprops which will give you a much better chance ultimately of joining a good airline, than getting out your checkbook again to try to jump straight in by buying a Tr or line training. The checkbook method might win you favour from whatsisname 320 and other accountants & HR types, however, they are almost irrelevent because it is not them that you have to impress - it is the Chief Pilot / Training Manager / Training Captains etc.
BS