The recent rule changes have changed my target list to the following:
om Recon Detachment:
Cadian Castellan (armed with bolt gun) 55pts
2 Cadian Command Squad (officer with plasma pistol; 1 plasma gunner) 2 x 65pts
4 Cadian Shock Troops (2 x Sargent with chain swords; 14 lasgun troopers; 2 plasma gunner; 2 melta gunners) 4 x 120pts
2 Cadian Heavy Weapon Squads (Mortars) 2 x 65pts
2 Rogan Dorn Tanks 2 x 240pts
6 Scout Sentinels (with autocannons) 3 x 110pts
6 Armoured Sentinels (with lascannons) 3 x 130pts
Total = 1995 points
Adding the following would make a 3000 point force:
Lord Solar Leontus 120pts
1 Cadian Shock Troops (2 x Sargent with chain swords; 14 lasgun troopers; 2 plasma gunner; 2 melta gunners) 120pts
3 Catachan Heavy Weapon Squads (Missile Launchers) 3 x 65pts
2 x 10 Attilan Rough Riders 2 x 120pts
Total = 3000 points
A document named "Chapter Approved Tournament Companion" recently appeared on the 40K download page and this document includes a Base Size Guide which indicates that Commissars, Cadian Castellans, and Cadian Command Squads are expected to be on 28.5mm diameter bases. Sentinels are now on 80mm bases (they used to be supplied with 60mm bases). Cadian Heavy Weapon teams are on 50mm bases (surely some mistake) while Catachan Heavy Weapon teams are on 60mm bases. Rough Riders are now on 60x35.5mm oval bases. I intend to follow this guide as best as I can, although I will be putting all heavy weapon teams on 60mm bases.