How to install locally build image packages

I rebuild the kernel locally (by running ./build_deb) and generated the following 4 .deb packages

Which one shall I install? and linux-image-4.1.18-bone-rt-r20_1cross_armhf.deb is too big, shall I put it in microSD card so as to install it?

-rw-r–r-- 1 docmark docmark 177304 Mar 10 15:56 linux-firmware-image-4.1.18-bone-rt-r20_1cross_armhf.deb
-rw-r–r-- 1 docmark docmark 7004688 Mar 10 15:57 linux-headers-4.1.18-bone-rt-r20_1cross_armhf.deb
-rw-r–r-- 1 docmark docmark 20312054 Mar 10 15:57 linux-image-4.1.18-bone-rt-r20_1cross_armhf.deb
-rw-r–r-- 1 docmark docmark 778362 Mar 10 15:57 linux-libc-dev_1cross_armhf.deb

Boot the board, copy the linux-image*.deb and run:

sudo dpkg -i linux-image*.deb

Regards,