Isonic 2-board combo

Hi,

I am thinking on a two-board slalom combo for amateur racing. I am an experienced sailor, 86Kg, 42 years of age. I will be new to SB, I always used Fanatic and F2, so I am not fully familiar with your range. I was thinking of either one of the following two options:

Option 1: IS 97 + IS 117
Option 2: IS 97 + IS 110

Bigger sail will be 8.6, I rarely do slalom in more than 30 knots, I also race Formula in light winds.

My questions:

1. Which option is better? My problem deciding is that, by the board specs, I would be choosing Option 1, but reading some posts from Remi it appears the 110 is outperforming larger boards (or not underperforming) even in light winds. I like smaller boards in general as I can get the same top speed with less sail and less fin, and drive the board with less need to apply brut force to control and jibe. So I am tempted by Option 2, but do not want to make a mistake.

2. Sails: I am tempted to buy non full race sails this season, to keep costs down and get more durability (hopefully). Either NP H2 or North RAM F13. How much am I reducing my performance doing this (I've used full on race sails only for 20 years, just wonder how far have the 2nd tier slalom sails went in performance as technology trickles down). Also, I am planning to skip one sail size, and buy just 3 sails (8.6; 7.0; 6.3 so no 7.8 size). Otherwise, I would get the full on racing rigs. If any of these is a bad idea, please let me know.

Thank you, your views will be most welcome.