Hey Mark,
Your flowers are looking nice, and coming along great. Looking at the diary it doesn't look like it's too bushy so I'd only do a mild defoliation if any. Look and see if there's any leaves that are really blocking the light from a bud, if it can be tucked out of the way you might want to do that first, then if not remove just a few leaves that are in the way. Usually when i defoliate a bushy plant i still try to only remove about 20% of the leaves because the few that lost too many leaves took a long time maturing and just weren't as healthy.
Happy flowering.