I'd agree with HM an others, if it goes an goes well, that'll do...
Maybe I'm lucky, because i've honestly seen most breeds rat, propper rat too, from your early Plummer book mainstays, Lakie, Border, Russell & Fell/ Patterdale, to Plummers, Beddies, Cairns, Westies even Yorkies!
Seen a couple of cracking Fox terriers I'll never forget too and just about every cross twixt all these an others...
My fave... Well, 'ol DBP weren't wrong when he talked about those fiery dogs and Johnny D knew his stuff too, because for me, from way back when I seen loads of terriers go, if I had to do