I used 16' Cables. The port side was just about dead on, and the starboard side had some spare but not a huge amount. 16' on both worked out pretty well.

I used the Stainless Marine Deluxe no slack indicators. The install was pretty easy and they work great. Pics attached.

I used the 4200 to seal the threads on the cable fitting. I got her in the water today and no leaks! I still have to fill in the gaps in the transom around the cable from the inside. I will probably use more 4200 for that also.

Anybody know what type of solenoid I need for the Trim tab pump? Is it something I can get at the local Autozone or something?

I used Arco SW661 solenoids for my tabs. Napa here did not have them. Most of the auto solenoids are grounded by the solenoid bracket. You want the marine solenoids where the bracket attached to the solenoid is not the ground, it's isolated.

Oreillys found the one I needed in their Borg Warner Marine catalog. The Borg Warner # is S5204 in case anyone needs it. I should have mine tomorrow! $12.49!