As a rule of thumb the standard sails cater for about 15 knots of wind. The force goes up with the square of the windspeed.
In light conditions you could have 4x the standard sail area. This is impractical.
The 150 genoa is only designed to go up to probably 10 knots max.
Your problem will be to reduce sail area for increased winds.
Say from 15 with a jib to 20 halve the sail area, at 25 a third the area at 30 a quarter.
So if you have 400 at 15, by 25 you have 130 by 30 you have 100. That is probably a storm jib and two reefs.
You need a jib and stormjib. Most people underestimate just how much and how quickly they have to reduce sail area.
As you have a roller furler, you could use a staysail instead of a jib.