Conventional piling does require large equipment, however, you'll never drive thru N>100 anyhow so now that your into drilling then economically it makes sense to install micropiles.
Typically, micropiles have a cased upper length and resist compression and lateral forces well.
In response the initial question above regarding the anchor plate please note:
1. A triple #20 Gr. 80 anchor bar configuration is rare.
Here's what you do: 65 mm th. x 500mm x 500mm brg plate (atleast to span over a 10" diameter borehole - therefore overkill but safe)
2. Use two plates 3...