welcome to our little fun forum - but sorry you had to join us
all the points you raised are valid and important to consider - my issue is farther south but there are similarities in both symptoms and treatments -
if it were me, i'd stay on the asacol and try really hard to stick with the SCD - i've never done it, but my diet is pretty restrictive so i understand the challenges you face -
try it for as long as you can, but don't for a minute think you've failed if you find it too difficult - you can always try other diets mods or you may have to up the meds - you do have options, which in my book makes this whole thing a bit easier -
good luck -