I've decided I'm definitely going with Jackson Premiere's. I'm planning on getting a new blade too. I bought my MK Pros used and I think they are near the end of their life now.
I only just found this thread now, but I would agree that Jackson Premier would be the best choice...
I have Jackson Premiere boots and I weigh the same as you and I am at the same level too!
The Premiere is a great boot, very supportive and comfortable, and perfect for that level.
The lady at the pro shop was worried they might be too stiff for me since I'm not up to Axel or doubles yet, but it has been fine. It only took a few hours of skating (2 or 3 sessions) to adjust to the stiffness (I had Jackson Freestyles before, which are firmness level 45, so it was a jump up of 20, skipping one boot). I had no choice anyway, I had to get Premiere as it's the lowest level boot that Jackon will do custom widths on, and I have extremely wide feet and couldn't squeeze into a stock size boot anymore.