I want to shorten a system that's 4-5 inches in length. The plan is to use a Flowbee vacuum trimmer to cut the length down to 1.5 to 2 inches all over and then blend the fringe using thinning shears and a razor comb. The HS is SFS lace and medium density (scalp is visible). Does this sound reasonable? This is my first attempt at this and I don't want to mess up an otherwise good system. Thanks.