Thanks gentlemen.
Looking back, it took a few days of on- and off-time building the model. Total time would probably be around 7-8 hours if I did it continuously, maybe 10 hours for the extra time finalizing and modifying small details. I had to stop midway because I ran out of blue pieces, so I ordered more from Lego.com (you can order pieces only, not sets). $80 and a few days later I'm back in business, but did not use all of it up. However, I used up most of the valuable special pieces, connectors, half stud offset plates, etc that round up the models and make them more realistic.
So while I still had the creative juices flowing I decided to revamp some of my older models too. More on that later...
I'm pretty happy with how everything came out. To be honest I don't know what price to put on any of these, since it's been asked before for me to build models for others. I actually have plans on doing an R107 next...after finalizing the...well, you'll find out
Some of my all time favorites, which I still have:
The two that got away (S123 and C123 AMG)
Can anybody guess what's next, before I make the R107?