Looking to mostly likely build a CNC Router Parts Machine, just want to cover all my bases after reading these forums for 3 days straight.

What is the dif between the standard and pro over at CNC? Do I really need the pro - Plan on Cutting:

60% MDF
35% Hard woods
5% aluminum

So here is my build plan - Not complete please help me fill in the blanks

CNC 4848 Standard = $2595
Spindle vs Router = HAVE NO IDEA YET, is a router good enough or do I want a spindle??? ~ $350
Router/ Spindle Mount ~ $100
Table Base ~$300 (made from wood)
Nema 23 Kit ~ (FULL ENCLOSURE TO SAVE TIME) $1295 at cnc
Mach 3 software = $150
Other software ??? = $400
Cable management kit = $229
Computer = $300

Am I missing anything

Total ~$5719 for ready to go system and I'll be routing away correct?

Also How long does it take to build one of these bad boys - I am mechanically inclined, but may struggle because of Murphy, and the electronics.