Hi Skeast,
The Q.PEAK DUO-G5+ 330W panels are a good choice. See the excerpt about Q Cells from our Best Solar Panel review:
Hanwha Q cells is a well known, high volume panel manufacturer offering a wide range of quality panels for all applications. The latest Q cells G6+ Duo panels are backed by a new 25 year product warranty and improved long term performance warranty with 83% rated output after 25 years.
Q cells offer a very wide range of panels from entry level standard 60 cell panels using reliable mono and polycrystalline cells, to the highly efficient mono PERC Q.Peak Duo range using half-cut cells with 6 bus-bars to achieve up to 19.8% efficiency.
- Power rating* (W): 270W - 335W
- Efficiency (%): 17 - 20.2%
- Price range: Med $$$
However, SMA SI8.0H inverter you listed is an off-grid (battery) inverter, not a solar inverter. There is either a mistake in the quote or the wrong inverter was specified.
The inverter listed should be a SMA Sunny boy 6kW with 97% efficiency.