Could you take over a bunch of clothes instead (and carry the more unusual stuff when you have visa in hand and are moving)?
I managed to fit about 75% of my clothing into 2 suitcases, plus cram about 1/3 of my DVDs in there as well on my recent visit. (I've got citizenship, so I wasn't really concerned with the items I was packing, but I was surprised at how much stuff fit.) Granted, I've also gotten rid of a ton of stuff as well, so my goal is to move over with only clothes, dvds/electronics, and whatever stuff my pets need.
You can also help avoid suspicion by bringing along very clear evidence that you're not staying in the UK and will be moving in April/May. (Lease agreement/mortgage, employment letter, etc.) It may not be enough to avoid the 7-hour angst that Marlespo dealt with, but at least should enable you to get in the country without a bounce. You can also clarify to the IO that you're aware of the visa procedures and have every intention of following them, etc.
At any rate, good luck! I hope you have a lovely visit. 
All good advice, mahalo!
I was thinking about it a lot and decided to pull out most of the kitchen stuff and all the knick-knack stuff. I am not a fan of taking over a ton of clothes (since I feel like I look SO MUCH different than everyone else when I'm there - fashion wise) but I guess it would just be smarter to do clothes this trip.
I am still going to take some of my kitchen stuff, but the true reason for that is because I want to do some holiday baking over there, and DF doesn't exactly have that sort of thing.
I will have a letter from my employer stating the date I am required back at my job though. I see no reason for me to get pulled up. And now that I've pulled out most of that "stuff", I'm a lot less worried about it.
ps.....congrats Marlespo!!!!
