So after prolonged deliberation I am jumping into AG brewing with a vengeance

I would appreciate any comments as to what I might have included that might not actually be necessary (or if there are other better options) and vice versa, anything obvious that I might have missed off. So my basket currently contains....
1 x Ss Brewtech 10G kettle
1 x Ss Brewtech 10G mash tun
Sparge arm
1x Speidel 30l fermenter with tap & airlock
Starsan
pH stabiliser
PBW cleaner
Spare 30l buckets
Bottling wand
Steel paddle
Bottle brush
Bottle cleaner
Counter top capper
Caps
Auto syphon
Jug
I know I need a hydrometer but am considering using a refractometer so not added anything yet. I also need a Buffalo 3kW induction hob but will need to source elsewhere. To save a few quid, in the first place in am thinking about using one Brewtech kettle to act as a HLT and boil kettle - is this a good or bad idea?
So if anyone has time to comment then feel free - it would be really appreciated.

G