1000 point list

I'm trying to build a 1000 point iron hands list. (Ironstorm spearhead) I'm a little iffy on some od the infantry/ battle line. Iron father feirros (warlord) leading squad of 5 heavy intercessors.

Apothecary leading squad of 5 hellblasters

Techmarine (master of machine war)

Intercessors squad

Ballistus dreadnought (I already own this one so it's going in)

Gladiator lancer

Repulsor

I have an idea of strategy though I'm extremely new to the game and do not know the specifics.

The ballistus stays on the home objective (maybe with the Techmarine)

Iron father and his intercessors ride in the repulsor escorted by the apothecary and his hellblasters and the gladiator. The repulsor drops feirros and his squad at the central objective. Then either the gladiator or repulsor stays with feirros while the other goes with the hellblasters to a side objective.

The intercessors can fill in gaps, bit I'm iffy on if they need to be switched out. Any recommendations?