The painting and weathering will come together pretty quick. When I did my RvB Spartans in 2010, I was able to do all of the painting and weathering for 8 suits in under a week. The Space Marine paintjobs will be a bit more complex, but it won't be all that big of a deal. The more complicated and time consuming part will be actually assembling and strapping all of the parts together. After that, it'll be pretty quick.
Last night my friend Matt stopped by, saw the leg parts, and decided to try them on:
As long as he was halfway together, I told him we needed to stack up the rest of the pieces:
I had to stand on a bucket to reach the shoulder.
Here's everything we've got so far roughly taped together:
The finished version will have the chest and shoulders sitting a bit higher, so there will be less of the character's neck (and wearer's face) exposed.
There was also a lot of discussion about whether or not the chainsword was too big. Here's a shot showing it next to the character, but given the cramped quarters we were working in, the perspective still makes it look big:
I'm still pretty happy with it:
We didn't have any straps to hold the boots onto his feet, so we didn't get to test the mobility of the suit. But his knees and hips were in the right place, so walking shouldn't be that big of a deal. The arms are a bit awkward, but that will improve once we've got them strapped together right.
I still need to knock out the rest of the forms for the backpack and sculpt out the rubber parts. Then it'll be time to crank out a few suits, paint them up, and go marching around town.