MJK - In general, retrofit bulbs with internal drivers like the Greentek are not dimmable. You'd have to locate an external driver, UL Type C, retrofit bulb and make sure the driver has 0-10VDC dimming capability. Type C is rather unpopular due to the higher cost of purchasing separate lamps and drivers. Not many available when I search - here's one example:
Lamps (link) +
Driver (link). For lower cost you can get 4ft integrated LED strip lights like
this (link).
The easiest cheapest way to dim is by separating the low voltage 0-10VDC dimmer from the line voltage On/Off switch. 0-10VDC dimmers are nothing more than a potetiometer - the 0-10VDC is supplied by the fixture/driver. This allows all fixtures to be wired to 1 dimmer without regard for fixture wattage. Here's
one (link). If you want to get fancy and spend the money on dimmers with On/Off function, then you'll have to pay attention to the wattage. As you've already noticed, the acceptable LED wattage is much lower than the incandescent wattage rating due to initial surge when LEDs are turned On.
With respect to the typical K12 acrylic prism lens on other fixtures in your house - usually used on recessed fluorescent grid fixtures - LED retrofit bulbs with frosted lens (aka: diffuser) can work. Just do not use clear lensed bulbs behind K12 acrylic unless you're going for a psychedelic motif.