Definitely go with option 2. Thats what I have though I'm not feeding my home system, but rather portable balanced amps (RSA Lightning, RXMK3b+, Duet).
The first time I had the "+" mod done, I had Vinnie install a 2.5mm TRRS instead of his usual 3.5mm TRRS thinking I could use some of the balanced cables that are already available for the stock AK240. This allowed me to swap back and forth between the stock balanced out and the RWA true line out (TLO) both times using an amp and the same interconnect.
I noticed a few things improve with the TLO. It was definitely more clear then the stock balanced out, but the thing that I noticed most was that the music seemed faster coming out of the TLO. Before I got the mod done, when I used an amp from stock 2.5mm and compared it to the the the ak240 without an amp, I actually preferred the sound of the ak240 without amp with my Roxannes. The music was slower and hazy when I used an amp. Once I had the mod done, it was like listening to the stock ak240, but all aspects of the sound were improved. It no longer felt slow and hazy when fed through an amp. I think the slowness probably has to do with all the circuits and caps the sound has to go through before even getting to the amp.
If your primary use for the TLO will be for your home system, then consider having Vinnie install a 2.5mm TRRS instead of a 3.5mm TRRS since then you can use AK balance cable or the Crystal cable, or DHC's. I had mine swapped from the 2.5 to the 3.5 since my system is all portable and I couldn't find any right angle 2.5mm TRRS plugs. The right angle makes carrying it around amped easier, but shouldn't be a problem for home use.