what people are bringing up is that its probably going to come out somewhat akin to takato's weapons
as in the model looks great but it just looks weird for BL due to proportional issues and unusual geometry (not that unique geometry is a bad thing), especially the scythe. the handle looks paper thin. you probably should import the
item positioning and scaling model and check if the proportions/dimensions are what you intend them to be.
but i digress. Animations for your model must be done by you in blender or shaper or milkshape; they can only be called with code. I suggest you get them ingame first before doing any fancymations cause you may want to edit the model depending how it shows up ingame, and editing after animations is extremely annoying/time consuming cause you may have to redo all the animations. You will also need to position the bow/arrow as you intend for them to be oriented in game (relative to that item positioning model) and put in muzzlePoints and such so you can fire the projectile (which also need to be exported).
after positioning the models, always select all and ctrl-a apply location rotation and scale. This is why you're having inconsistent results when scaling in object mode.
I'd help you but i'm a tad busy rn, so unless its a commission i can't get to your request right away.