Well, that's one reason I have the 10-16 on my Tele heh, I didn't want to pay another $35 for a custom radius. But honestly, I wish I did. It's not that I don't like it or can't play it. I'm not all that sensitive to radius, I'm much more picky about getting the action right and and the frets leveled correctly. Are you set on Warmoth? Not trying to talk you out of it, it's the best quality neck you can buy no doubt. But the AllParts necks offer some other options stock. I really like their 10" radius necks.
One other thing to think about re: Warmoth if this is your first Warmoth neck. Their "standard" profile is pretty thin. They claim its similar to the Fender C shape but it's actually a bit thinner. This has changed over the years, I have a 30+ year old Warmoth neck that's their "standard thin" and it's much fuller. If I were to order a Warmoth neck today I would definitely custom order and not try to buy an "in stock" one. It takes just as long to get it delivered as a custom build. Unless they have one in stock that exactly matches your desired specs. I would order either the "59 Roundback" profile or maybe the SRV profile. The "59" is very similar to the PRS Standard carve. (Which sits somewhere between the "wide thin and wide fat". ) The Allparts TRO necks have a fuller C shape profile that fits me perfectly. I love it. Also, do you know what size fret wire you want? My preferences have changed over the years, I used to like larger frets but these days I really like "vintage-tall" style frets. Like the Dunlop 6105's and the similar ones from Jescar.