Looking for advice on the designs of these components for 3 axis CNC milling.

[hanermo2]

Multiple comments, some may be useful..

1.
Do You really need the 1. with bulging head, be milled out for the round profile at top.
It is like old casted/finish machined bits, yes.
But could it no be a flat slab, of same accuracy ?
Much faster and cheaper.

2. Rest..
Do you need accuracy, or is "good finish" acceptable on the rounds, ends, tapers .. ?
Much faster and cheaper.

I suggest making a doc. explaining needs, uses, tolerances.
Would likely drop cost 50%.

Whats Your timeframe.
Material ??

Qty ? now ...
// yr ??