Good choice

For completeness, two other massive factors in such decisions are the likelihood of twins, and of male lambs being horned.
Heads are bigger with horn buds. Singles are bigger than twins. So if the cross will give polled males and the ewes are pretty much always mutiparous, the risk of a stuck lamb is far less. Conversely, if the cross will or might give horned males and the ewes may have singles, it's a much higher risk cross.
And a final comment... some breeds are born chunky and some are born small (and grow once born, to catch up later.) Texels are the former, Cheviots the latter. Hence Cheviot is a better cross for a small ewe, and Texel is a higher risk cross.
In my experience, Beltex (or Beltex x Texel or Beltex x Charollais) is a better choice than Texel for a crossbred breeding ewe (although all the same factors still apply.) The resulting ewes are more maternal and considerably more milky.
If you use a very chunky tup on small ewes, you really need to know what you are doing in terms of how to feed the pregnant ewe. Too little feed and the ewe might get twin lamb disease, and may not have enough milk for her chunky, fast-growing lambs. Too much feed and the lambs will be too big and you will have difficult lambings. And never, ever feed a small ewe carrying a single lamb to a tup that gives chunky lambs - so now you need to add scanning and separating your ewes to the equation, if you don't already do this.
So yes, use Cheviot and save yourself a lot of angst

. You can always use a meaty boy on the Cheviot cross ewes (once they've had a first crop to a same-size tup.)