Hello @rising_income
The Meraki Go switches do not support LACP IEEE 802.3ad or Static Link Aggregation.
"Adaptive Load Balancing" would be the way to go. This also works if you connect one port to a router and another to a switch on the same network. It doesn't depend on special hardware.
Keep in mind, you don't get 6 times the speed of 1Gbit/s. Even your Synology NAS will tell you so. The only thing you'll get is more bandwith. It's like a road with 6 lanes but still the same speedlimit.
I use a different setup with a NAS on my network. The NAS has only 4 ports. 2 ports are bound for data-access. the other two ports are not bound, one is used for virtual-switch and the other for access to the GUI of the NAS.
Personally I would add a max of 4 ports to a bond.
Hope this helps
Cheers