The problem with dds is the chip package. I have not found a DIP package dds chip nowhere.
Another problem may be the availability of the dds chip after a few years.
The simple pll shown above is a good aproach to the homebuilder but I do not know if it could extend to 30MHz?
There used to be dip packaged dds chips...look around, like on ebay. They don't make them that way anymore because the clock frequencies have gotten too high for a dip package.
you can use an adapter and hand solder on the ssop type dds chips to it:
I know its fun to homebrew a PLL, but buying one of these cheap modules you can spend more time playing with the RF side of the circuit.
Anyway, to build a 1Hz step PLL (integer type) using common chip sets is a big headache, and involving a lot of stages (at least two loops) and discrete components.