I say your fine if it handles good. Take it for a test run and see. it may take a few miles to get use to it but I say run it.
When I went 2 up to sturgis-
both-400 lbs
heavy ass HD trunk loaded with 10 days worth of clothes.
Tent poles made out of 1" conduit under the trunk
Saddle bags full of all my metric tools, camera, video, etc
Duffle bag packed full on trunk with- tent, tarp, fan, light, mattress, pump, other tent supplies
Leather coats/chaps on top of that- it was taller then kit when she sat on the bike!

Bag lids had sleeping bag and other small clothing.
Helmets hanging off the trunk.
1200 miles one way she road like that. Bumped the shocks up to high. Stressed my homeade brackets and had to make new ones out west. Shipped everything home but a change of clothes.
I learned alot since then and now we ship out tent stuff out ahead of time.
Stuff I learned going west every year for our 10 day trip, may help you lighten your load also. Take 3 days worth of clothes, you can wash every other night. Take 'throw away clothes'. Ones with holes or missing the crotch of stuff. Wear them a day or 2 and throw them away. Saves weight. 1 each long sleave & sweat shirt. No need to have 2 each. A back up of 1 sweatshirt is ok. Get them vaccum seal packages to save on space for your clothes. Tennis shoes? Eh, not me but she wears flip flops so that saves space. Hell, I wear my biker boots with shorts. She hates it but oh well. Baby wipes help in getting you refreshed on the road. We ride when we get up till about dark, weather permiting. Wipes help getting the road off in mid day. Get some kind of small camp towel to dry yourself after a shower. Use hair/body wash in 1 bottle. No need for shampoo & soap to be separate. Use the small travel stuff. You run out, get more later. Use a small matress if possible. If you fit on a queen, use it. No need to have the extra room for a king. We used a twin for a year or 2 till we got fat.

Helmets, your kind, if you wear them is up to you. No reason to pack to each. I can hang our novies off our luggage. Also you can sleep at rest stops. We just lay out the mattress and sleeping bag. Not a bad night of sleep and beats setting up a tent. we can pack 10 days on the road on the bike comfortable now. We learn every year.