Barely fair isle?

LInda Lencovic Aran, BANFF Aran - BFL/Alpaca, Kettle Yarn Co., work in progress

I finally sucked back my trepidation and started the xmas jumper the other day but am having some serious doubts as to whether I should continue!

Maybe some of the more experienced Fair Isle knitters among you could weigh in? This is the current wobbly state of my stranding technique (worked inside out!):

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Which I was thinking wasn’t TOO bad, as I assumed it would block out, but then to be sure I tried blocking one sleeve (was working 2 at a time which probably wasn’t doing me any favours!). This is what I am still left with on the worst, if inner part of the arm sleeve:

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What do you think? Will this even out eventually, or should I just throw in the towel? Maybe I am just not advanced enough for this and should switch these bits to a colour pattern with less long floats like a simple double lice stitch or something?

Help! Am despairing. :-{

Should I continue on, or frog?