Hello Mate
The calendar can be found here
http://www.neamotorsport.co.uk/
At the moment I would expect that racing is every 2nd week on a Sunday from 10am-3pm although this may change in the future, but there will be plenty notification given.
The next race planned is the 14th of August 10-3pm but keep checking on here to see if that changes at all.
For a a 4wd you'd probably get by quite well with yellow minipins with medium inserts but some have been having success with yellow mini spikes and medium inserts.
We only run buggies at seaham and we run 2wd and 4wd depending on the numbers sometimes these are mixed together.
Come along and have a look, great group of lads, very helpful and friendly.
if your just returning to buggies you may want to get down to the Buggy GP this weekend as it will be awesome :-)