Hey all looking for some feedback on this army and what to deck my squad Sergeants out with

Thanks for the feedback in advance!
HQ Captain 140
Artificer Armour
Strom Shield
Power sword
bolt pistol
1*10 man
Tac squad W/ dedicated Rhino 185
1*Heavy Bolter
Dev Squad 1 150
4*Lascannons
Dev squad 2 130
4*Missile launchers
LoTD 150
1*Multi-melta
1*Meltagun
Stalker 75
Venerable Dreadnought + Drop Pod dedicated 170
Multi-melta + P/fist w/ Heavy Flamer
The main thing that is stopping me with this list right now is the bolt pistol + chainsword combo vs just a bolter on my Sergeants. As this is an IF list I fell like a bolter on my Sergeants fits well with the tactics but I'm looking for your feedback on how well this will work with the rest of my army?
I want to use the models above as I like their looks and have purchased a few of them. Only one not really necessary is the stalker but I need some
AA and I believe it won't be too bad against laying some flak down on some infantry.