B1 is not a capacitor bank — it's an RF balun. The RF connection on the chip is a 100 ohm balanced line, and just about every RF antenna and connector you can get is 50 ohm unbalanced. The solution is a balun, which is a sort of transformer, and that obnoxiously small part you are looking at. It's in the parts directory
It is entirely possible to solder it by hand, as long as the pads are not dislodged. It is not easy. Among other irritations, the contacts on the balun run the full height of the balun, which can make getting a good solder joint tricky. I find the best way is the following:
— Get the finest soldering iron tip and finest flux core solder you have. .032 is doable; .020 is better. You will also need a hot air rework tool.
— Coat the board and the contacts on the part with a thin layer of flux.
— Tin both the board and part contacts. You want a nice solder bead with no bulging or bridges.
— Reflux the board
— Grasping the part by the ends with a fine pair of tweezers, place it on the contacts so the red dot is on top and facing the RF connector.
— Apply hot air until the solder melts, then remove the hot air
— When the solder solidifies, let go.
