not pro but few thing need to consider lor:

you got that much lens and flash gears for F mount, if switch to mirrorless, then you have to buy whole new sets again wor for job sommore.

good thing is mirrorless is light, good for you if your current gear is tiring .... a lighter load would be helps a lot.

but performance of both bodies i duno la, i duno you use burst shot in your job or not hehe.

I would definitely make the jump if only shooting for weddings  Its too bad its very difficult to shoot macro with mirrorless cameras 

The biggest thing that you will be giving up is the feel of the optical finder, although that's also the main reason for the bulkiness and weight (D610 is actually not very heavy already lo    ); but you gain quite alot from the mirrorless system, especially when the sensors in Sony/Nikon are similar (right?).

The nicest thing about shooting with mirrorless cameras (I have an XT1) I think, apart from the relatively light weight, would be the face detection functon (to me, at least). Its not easy to get faces in focus with an optical viewfinder in some cases where you want to have very thin DOF; and shooting with Liveview on a DSLR is kind of awkward too 

Of course, there are alot of useful functions which are not present in some FF DSLR like WiFi, which is kind of weird since they can be quite useful. And then there's the neat stabilization feature 

drop durability, optical view finder especially under strong sun light, you cant see any shi1ts with screen, EVF can see la but got delay one, new model i not sure....

lens for mirrorless i hear also expensive right? 

battery i duno, i not sure which one lasts longer...

Yes, at least so far I've not seen any Mirrorless that can stand against weather like top of the line SLRs.

Optical view-finder is the best under all conditions because unlike EVF the view-finder is what you view through the glass.

Best part above OVF is you need not power ON your camera to view.

I think the acquisition of Samsung tech by nikon was just a rumor

yeah like goldfries said, weather sealing. also not to mention since D300, D700 both full magnesium alloy body too, now D600 got partial alloy body. i never heard mirrorless got those XD

and even nikon bought samsung tech, don't give high hope on them like nikon1 XD

and OVF is usable in all situation. unless you mean pitch dark one la, that one EVF might usable due to it can project brighter exposure before shoot, but i sure lag one lor because it delay shutter one like phone lol

the one i said not usable under strong sun light is screen, i mean the big screen on camera body, since i not sure which mirrorless got viewfinder one, those without one like NEX3, NEX5 , under sunlight cannot see a single shiat.

because both EVF and LCD requires the sensor to be active, process the information to pass to the screens.

If you forgot to power off then good luck la, even if you set to auto power off also it will drain a while before power off.

Very unlike DSLR, my Nikon D750 go holiday in Taiwan with me already then following week go Singapore cover event - that also still same battery pack all the way, half way through event (with Wi-Fi and all) then only I had to change battery.