Hey guys, I need to take one judgement call, so who better than to ask in this forum

My current projected CRS is 431 (pending ECA expected by mid-July). I have CLB10 in IELTS and wife has CLB9 all through except Listening which has CLB8 (7.5 in L section). So if she retakes IELTS and can score CLB9 all through, it will increase CRS to 433.
With the current trend of 440+ cut-off in 2018, does it make sense to spend the $$ to go from 431 to 433? If OINP HCP opens up, can those 2 points give any extra advantage?