OK, I'm going to open a large can of worms here. How big is the reserve in your Javelin J3? You are wondering if a 190 is appropriate for you as a main. I'll bet your back up plan is quite a bit smaller......
nothing is packed in it at the mo ,,,im confused about this subject the reserve that was in it while the last guy owned it was a raven II of the top of my head i think its 218 or close i cant remember
but sunpath says it can only take a 160-170 reserve on the website so im thinking the ravenII is too big , its 29yo anyways so im not using it , just saying about the size
i also have a swift plus (175 i think ) thats 25 yo lol still not keen on that ether tho , only two live uses but id be much more happy with a younger one