Go for it.
My first was a BA III, only slightly different from what I'm seeing in the Boss Street. Black on Black... It hasn't been used very much, unfortunately, because between then and my next combat rotation I somehow managed to come into about 14 other infi creations, but that's another story, and one you'll no doubt soon find yourself familiar with. But everyone starts somewhere, and you'll be proud to be putting infi to work at such a reasonable price.
Get two. Sage advice, free of charge. INFI appreciates faster than my precious metals IRA.