Upgrade help: PERC 6/i to H700 on Cabled R410

Bought a used R410 and realized after the purchase that there were two chases types one with hot swap drives (contains backplane) and a cabled version. I have the cabled version.

I wanted to upgrade to the H700 as I understand it was capable of 6Gbps vs 3Gbps (and also had SSD support).

I (foolishly) purchased the cable separately, assumed the mini-sas breakout cable to 4x SATA + power would have been long enough to reach the drives - but it’s too short (the cable that came with the PERC 6i was longer but was the 'wide-sas' format); likewise I can’t seem to find a cable online that’s longer than the current one that works. The cable from the PERC 6/i is some wide SAS format If I plug the cable in to the 16-pin power, I can reach the hard drives; but not the mini-SAS on the H700; if I plug the mini-was cable in to the card I can’t really reach the power.

Someone else had posted a SFF-8087 to SFF-8087 coupler and then purchased an additional mini-SAS cable and I wanted to confirm that this was my only option. The coupler @ $59.95 plus another cable will be over $100 once all is done - just wanted to see if there were other options.

Coupler here: https://www.pc-pitstop.com/sff-8087-female-gender-changer