The Catachan Job Lot

A few years ago I picked up a job lot box of GW 40k Catachan figures for a bargain £20. I don't play 40k, but I like the generic, flexible style of the figures on the tabletop.

Recently though, Arabiansquire has become old enough to be left on his at our local gaming club on Saturday mornings (at his own request I should add), whilst unfortunate Dad has less interesting chores to do. He enjoys the whole club thing and is quite happy at the moment to play his own game on a spare table, sometimes roping someone in to play his own basic rules. But I though it would be good if he could play a proper game with someone, and as the kids in the club are attracted to Warhammer 40k I thought I'd see what I had in my Catachan box with regards to a workable force.

The previous owner had conveniently monikered the bases of the figures, so I've managed to roughly group squads together with the help of an older codex in the club library. So this is what I appear to have:

Infantry Command

1 x Officer
1 x Lasgun and  Commlink
 3 x flamer 

Infantry Squad #1

1 x SGT
5 x Lasgun

1 x Lasgun and Commlink
Missile Team
1 x flamer  

Infantry Squad #2

1 x SGT
7 x Lasgun

1 x Lasgun and Commlink
 1 x flamer  

Infantry Squad #3

1 x SGT
7 x Lasgun

1 x Lasgun and Commlink
 1 x flamer  

Command HQ

 1 x Officer

1 x Lasgun and Commlink

Standard Bearer (Lasgun)
 1 x flamer 

1 x Meltagun

Elite Veterans Squad

1 x SGT
4 x Lasgun

1 x Missile Team
 1 x flamer 

1 x plasma gun

2 x Meltagun

Spare: Heavy Bolter team

Not pictured: as a separate purchase I have 3 Sentinels.

From what I can tell the force looks legal enough (aside from 3 flamers in the Command) , but I seem to be left with a spare Heavy Bolter team. The codex I have (don't know if it's 4th or 5th Ed) adds up to just over 700 pts depending on minor options.

I suppose this should be enough to get started with, but any advice via the comments below would be gratefully accepted.