Patio level-ish with house FFL

[vala]

My existing timber decking's joist got chewed up by rats and it's time to get this area sorted.

The DPC looks to be a couple of courses below the rear door opening which, now the decking has been removed is where the old patio was.

I'm aware I shouldn't really be building externally above the DPC level, however if I install an ACO drain, the full width of the patio against the house would this suffice, and allow me to safely raise the patio level to near internal FFL?

could even step away the ACO by 50mm or so if needed. 

[Conor]

Pavers on pedestals. Dead easy., no drainage issues. Plenty of topics here about it.