Depends on the locos - number of wheels, pickups etc. The frogs already have wires attached, if you keep these accessible then you can add juicers later if needed.
The primary traffic target for the LTSR originally was the Rosherville gardens at Gravesend. The ferry was an integral part of the operation. The Southend extension was something of an afterthought that grew to outshine the Tilbury line.
Just found mine on the floor after noticing it wasn't where it should be. On refitting I found it was a rather loose fit. Then I turned it about 90 degrees and it became much tighter. So if anyone has a loose chimney try rotating it until it improves.
Tri-ang R218 as seen here at Hatton's:
https://www.hattons.co.uk/772568/tri_ang_r218_continental_style_primary_goods_van/stockdetail
The coupling looks like something homemade, but with the ends cut off it's a mystery how it would work.
From the current FAQ (on Hatton's website) :
"Andrew Barclay reruns are currently under review. Once a decision has been made we will be sure to communicate this to customers."
Did ebay tell you where? It's at Rails of Sheffield:
https://railsofsheffield.com/products/planet-industrials-pi-001-e-kerr-stuart-victory-0-6-0t-locomotive-in-black-rod-no-608
Better to ask the question now than wait until the tooling is done.
The renders on P.1 clearly show rivets. They also shows the indicator holders either side of the smokebox which are wrong for the Wainwright livery.
Digitrains sell them, but the HO pads are out of stock. You could cut the O scale one down to size instead.
https://www.digitrains.co.uk/shop-by-brand/cmx.html
On page 18 of Southern Wagons vol.1 there is a diagram of an open wagon with Panter brake gear, this is the best I can find so far.
The next page also has an interesting diagram.