I don't think you would need to upgrade the head, your evo will fly just fine the way it is. As for maintenance, the fuse has a large removeable hatch on the top which provides access to everything. You will still need to take out the mechanics every now and then for maintenance, but it shouldn't be a big deal.
As for the glow adapter, you can use a remote glow adapter such as this one:
http://www.ronlund.com/Merchant2/mer...ode=ACETTR3803
One note on the remote glow adapters, which ever one you choose they all wear out after a while and will likely need to be replaced at some point.