Should work fine in that situation. There's a flow test specified in A.C. 23-16 that talks about physically demonstrating 150% of the max flow rate for part 23 certified aircraft, and in fact all Canadian homebuilders and/or "owner maintainance" HAVE to do a similar test (not sure which categories, but I've certainly talked to customers that have had to do it).
The pressure drop on the FT-60 is really low, in fact quite a bit lower than the FloScan 201B that we used to offer. See
this doc for some of EI's documentation on this point. If you extrapolate those numbers down to your typical fuel flow, you'll see that at 10-15gph, the pressure drop is a small fraction of a PSI (I think the relationship between flow and pressure drop is non-linear too, but not certain of it).
