This is a greenfield site? Honestly, I wouldn't use that switch.
10G is an annoying beast, because the SFP+ specifications do not specify enough power to run RJ45 transceivers, so you have a lot of fibre options, or direct SFP+ to SFP+ copper.
However, there are switches on the market that have a mix of SFP+ and 10GbE RJ45 connections. For example, the Dell N4032 switch has 24 SFP+ ports, as well as two 40Gb ports, and each 40GB port can be broken out into 4x 10Gb RJ45 ports.
Another option would be to get that full SFP+ switch, and then use SFP+ to SFP+ connections to trunk that switch into another fully copper switch. Or if the other switches are a fair way away, you could use fibre transeivers instead. For example, the Dell N2048 has 48x 1Gb RJ45 and two SFP+ ports so that you could trunk 20Gbps of bandwidth from that switch into your 10Gbps switch.
The other option, although it defeats the purpose of having a 10Gb switch, would just to be use a 1Gb transceivers on both switches.