After doing some research, it looks like this particular cultivar ‘Palibin’ is a compact, low-spreading cultivar which typically grows 4-5’ tall with a spread of 5-7’. So you would want to give these shrubs at least 5' in either direction when you plant.
However, it also lists the zone as 3 to 7 and we are typically zone 8 a-b and even 9 in some locations in Lincoln County. So, that cultivar might not get as much heat as it likes to thrive here in Lincoln County unless you have a warmer microclimate. Just something to consider.