There's always the option to throw out an RFQ for bits you need machined for you on here. I haven't personally used it yet so no idea what the sort of cost people charge is but I would guess you would get some pretty reasonable quotes.

There are no shortage of DIY builds out there, you could browse the diy machines on here for inspiration - there are some amazing machines guys have built on relatively modest budgets.

If you do decide to go the DIY route then a bit of research on here will give you enough info to get started. Get a design whipped up and then ask for critique on here.