Hello everyone, I have a 280 watts (4 ohms) Gallien-Krueger 400RB-IV bass head paired with a 200watt (8 ohms) Hartke Transporter bass cabinet. I bought this bass cabinet at a local music shop and they told me that it could handle my GK's power. Little did I know that after buying the cabinet, it was a 8 ohms cabinet than the 4 ohms cab I was hoping to buy. Would adding a 2x10'' 400watts (4ohms) extension bass cab with my Hartke 4x10'' cab be a good idea at all? Thanks.