Birmingham to Lichfield is all 323s, Birmingham to Rugeley is 170s (both 2 and 3 car trains) with some 153s added to some trains. Hereford is almost all 170s, some with a 153 attached on peak trains, plus a couple of services booked for a 150/1. Shrewsbury is also 170 dominated on LM services, again with a 153 on some busy trains but sometimes it's pairs of 170s as it was on 1105 New Street to Shrewsbury last Monday.
Crewe to Euston via Stoke is normally 350/1s, Birmingham to Liverpool is a mix of 350/1s and /2s but at least it's twice an hour. Redditch is also all 323s, as are the Walsall to Wolverhampton via New Street services, although occasionally you'll find a 350/2 on those.
Snow Hill lines (Worcester to Dorridge and Stratford-upon-Avon via Stourbridge anf Birmingham Snow Hill) is almost all 172/2s and /3s, although a few workings see a 153+170 combination, one being the 1317 from Worcester to Dorridge I believe. Finally Nuneaton to Coventry is single 153s even at peak times.
As for where to go, Stratford-upon-Avon's nice enough to visit for a few hours. Liverpool's good for a busier environment and plenty to do up there tourism wise. Stoke's not bad, although I've no idea what to see there lol. Hereford's got a cathedral and Mappa Mundi if that's your thing, Worcester also has a cathedral. Kidderminster of course has the SVR next door to the mainline.
Enjoy your trip wherever you go
