You haven't made any big mistakes in purchase I don't think. You are just trying to mix Fixed Bridle and depower kite bars and they arent a good
match.
Stick with the handles on the 3.4 . Add a " strop " line to the handles and practice hooking in to your harness that way. Don't get too uptight about
the fact you are learning on handles and then progressing to a depower kite. Having the handles and getting a good understanding of brake turns +
applying both brakes at the same time to slow the kite or drop it back in the window. ETC. You will actually learn a LOT more about what to expect
from your depower kites by learning how to work the brakes on handles and a strop than you would on a bar .
Kites: 2.5m Profoil , Quadrifoil XL kitesurfer, NPW 5 Danger.
Flexifoil: 1.7m Sting, 4.9m Blade 3, 9m Blade 2.
Flysurfer : 19m Speed 2 SA, 7m Pulse
Peter Lynn :18m Phantom, 15m Synergy, 10m Synergy, 1200 Farc, 460 Sarc, 130 Tarc, 5m Peel, 4.2m , 6.4, 8.5 C-Quads, 3.5 LS2 single skin.
Rides: Flexi / P.L. Frankin'Buggy , Shaped + straight skiis, sand skis, Coyote blades. Core 95 ATB. RKB R2 ATB .
Ken (K2)