Hi, I have a gravel bike and have been wanting to get road wheelset to be a bit faster on the road. I got the money but now I am having second thoughts as I don't know how faster I would be? Right now I have WTB isym 23 wheels (with cheap formula hubs) with WTB 650x47 Horizon tires. The tires are more road+ tires than gravel tires and are smooth on the center with no knobs. I was thinking of getting 700c wheels with road 700x32 tires (for some comfort on day long rides and some light gravel). I do not race, and I am still working on my fitness (as my work and family time allows). My average watts (according to Strava) is 210W for an 1h ride and some 180W for an 3h ride after which I feel pretty tired (although not totally exhausted). Also, I live in a VERY hilly area. I cannot go anywhere without first going uphill With new wheels and tires I could loose some 500-600g of weight and should have better aerodynamics and lower rolling resistance. My question is will all those 3 things make a significant difference? Only one of those might not, but with 3 combined will it make a difference? Thanks.