I would say you should have a really good 1 orb so you can fight and win those fights so i would say go 5 1 orb units and then build you deck from there with some medium and xl counters GL
This system is really good i prefer it more that you can buy cause then the new players dont run out and buy alot of bfp and quits the game it better if you just play to get the things and i hope they wil balance the bfp prices on most of the things